Cornice-making machine.



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NICE MAKING MACHINE.

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' Patented Oct. 20, 1908.

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E. MOMAHON.

GOBNIGE MAKING MACHINE.

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EDWARD MCMAHON, OF SPRINGFIELD, ILLINOIS.

i CORNICE-MAKING MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application led January 14, 1908. Serial No. 410,809.`

'To all whom it may concern:

Be it known that I, EDWARD MCMAHON, a citizen of the United States,residing at Springeld, in the county of Sangamon and State of Illinois,have invented new and use ful Improvements in Cornice- Making Machines,of which the following is a specification.

This invention relates to sheet metal working machines, and moreparticularly to a machine designed for making cornices.

The invention has for one of its objects to improve and simplify theconstruction and operation of machines of this character so as to becomparatively easy and inexpensive to manufacture, thoroughly reliableand efficient in use, and readily adaptable for making cornices ofvarious designs and shapes.

A further object of the invention is the provision of rolls built up ofmetal disks having peripheries of different shapes so as to be assembledon spindles of shafts in any desired relation for producing rolls ofvari-V ous contours, the disks being easily removable so that they canbe re-arranged for producing a cornice of any required design.

A further object of the invention is to so design and arrange the partsof the machine to facilitate the operation of changing the disks ofwhich the rolls are composed for the purpose of adapting the machine formaking cornices of another design.

Another object is the employment of a guiding device which is adjustablewith respect to the forming rolls whereby the cornice can be madecircular on any desired radius.

With these objects in view and others, as will appear as the descriptionproceeds, the invention comprises the various novel features ofconstruction and arrangement of parts which will be more fully describedhereinafter and set forth with particularity in the claims appendedhereto.

In the accompanying drawings, which illustrate one of the embodiments ofthe invention, Figure 1 is a front view of the machine. Fig. 2 is avertical section on line 2 2, Fig. 1. Fig. 3 is a horizontal section online 3 3, Fig. 2. Fig. 4 is a section on line 4 4, Fig. 1. Fig 5 is atransverse section on line 5 5, Fig. 4. Fig. 6 is a vertical section online 6 6, Fig. 1. Fig. 7 is a section on line 7 7, Fig. 2.

Similar reference characters are employed to designate correspondingparts throughout the several views.

Referring to the drawmg, A designates the frame or supporting structureof the machine and comprises a pair of spaced uprights 1 which aresecured adjacent their lowerv ends to a cross piece 2, and the frame issupported in a vertical position by the `feet 3. The upper ends of thevertical members 1 are braced one on the other by the bars 4 disposedflat against the front and rear sides of the uprights 1. The leftupright in Fig. 1, is preferably composed of two sections a and b, thelatter of which has a tongue 5, Fig. 6, that engages between thebifurcations 6 on the section a, and these sections are hingedlyconnected by a bolt 7 passing through the bifurcations and tongue.

The ends of the tongue and bifurcations are beveled to engage thebeveled surfaces 8, Fig. 1, which surfaces are so arranged as to preventthe upper section b from swinging inwardly beyond the vertical, whilepermitting the said section to swing outwardly and downwardly for thepurposehereinafter to appear. Since the upper section has a swingingmovement, the bars 4 are pivoted at 10 to `the right upright and thefree ends of the bars are provided with vertical slots 11 whereby thebars can be hooked over the laterally extending headed pins or the like12 of the upper end of the section b, thereby locking the latter innormal position.

. Mounted on the frame A are metal-form ing rolls B and C that aredisposed horizontally and carried by shafts 13 and 14. The shafts rotatein bearings 15 and 16 and are disposed one above the other in a verticalplane. The uprights 1 are provided with vertically extending slots 17extending from the upper ends to a suitable distance and the bearings 15rest in the slots at the lower ends thereof.l The bearings 16 areslidable in the slots 17 and each bearing/is supported on the lower endof an adjusting screw 18, there being a swivel joint between the screwand adjacent bearing which consists of a pin 19 fixed in the bearing andengaging in an annular groove 20 of the lower end of the screw whichprojects into a socket in the bearing, as shown in Fig. `4. On the`upper ends of the uprights 1 are metal plates 21 that have threadedapertures 22 in which the adjusting screws 18 engage' so that by turningthe screws, the upper row b can be moved toward or away from the roll Cto accommodate sheet metal of different gages. On the shaft 13 1smounted a driving means such for instance as an operating crank 23, whenit is desired to workthe machine by hand and the shaft 14 is driven fromthe shaft 13 by the meshing gear wheels 24 and 25.

The forming rolls B and C are constructed with the object in View ofpermitting them to be readily converted into different shapes anddesigns so that a large variety of cornces can be made by the machine,and for this purpose each roll is built up of metal disks 26 ofdifferent diameters and which have their peripheries beveled, straightor cylindrical, concave or convex, so that by properly assembling thedisks, any desired contour can be produced. The disks are clampedtogether on their respective shafts between the collars 27 and 28 and toenable the disks to be readily removed from the shafts and replaced, thesection b of the left upright 1 is unclamped and swung downwardly so asto leave the shafts 13 and 14 free of the bearings 15 and 16 which aremounted on and moved with the said section b. The bearings in the rightupright support the shafts 13 and 14 while the section 7) is removed andthe disks 26 of the rolls can be then freely taken off or replaced overthe left ends of the shafts.

In order to properly gage the strip of sheet metal while passing betweenthe rolls, a gage D is employed, the same consisting of a verticallyextending member 29 that is pivoted at its lower end in a block 30, Fig.1, which block is supported on the cross piece 2, and the upper end ofthe said member is presented to the right ends of the rolls the shaft ofthe lower roll being extended through an opening in the member or gage29. The

, gage is adjusted by means of a screw 31 having threaded engagement inthe horizontal opening 32 of the right upright and suitably connectedwith the gage for swinging the latter to the right or left into properrelation with the rolls. The face of the gage presented to the rolls isconvex as shown at 33 in Fig. 5, so that when the edge of the metalstrip is started between the rolls, said face will guide the strip intothe proper position.

For adapting the machine for making curved cornices, a guiding devicedesignated generally by E, Figs. 2 and 3, is employed. This devicecomprises a shaft 34 disposed parallel with the axes of the rolls andadjustable in a horizontal and a vertical plane for the purpose ofvarying the radius of curvature of the cornice formed by the machine.This shaft is mounted in bearings 35 that are slidable back and forth inhorizontal guideways 3G, which guideways are formed with bearing blocks37 slidable in vertical slots 38 provided in the uprights 1. On theframes 39 in which the guideways 36 are formed, are adjusting screws 40swiveled on the respective bearings 35 and provided with operatingcranks 41. The frames 39 are vertically adjusted by screws 42 havingthreaded engagement in the openings 43 of the top plates 21 on theuprights 1, so that by turning the screws, the shaft 34 can be raised orlowered. On the shaft 34 are positioned supporting elements 45 that areassembleck by sliding longitudinally of the shaft and clamped inposition by set screws 46, the elements being of appropriate contours toengage the parts of the work directly in line therewith. By thisconstruction, the device for curving the work can be moved horizontallytoward the forming rolls and vertically above or below the central planebetween the rolls when a curve of small radius is desired, and when acornice of large curvature is to be made, the curving device E can bemoved outwardly from the rolls and vertically to proximity with thecentral horizontal plane between the rolls, as will be readilyunderstood. `With a machine of this character, a large variety of workcan be easily, quickly and accurately turned out and corniees of variousdesigns produced without the necessity of a large stock of formingrolls.

From the foregoing description, taken in connection with theaccompanying drawings, the advantages of the construction and of themethod of operation will be readily apparent to those skilled in the artto which the invention appertains, and while I have described theprinciple of operation of the invention together with the apparat-uswhich I now consider to be the best embodiment thereof, I desire to haveit understood that various changes may be made when desired as arewithin the scope of the claims.

Having thus described the invention, what I claim is l. In a machine ofthe class described, the combination of a frame including a pair ofuprights each having longitudinal slots and one having a movable part, apair of relatively-movable bearings in one slot of each upright, onepair of bearings being carried by and movable with said part, means foradjusting the said bearings, roll-carrying shafts mounted on thebearings, bearings in each of the other slots and provided with framesforming guideways, one of the framecarrying bearings being mounted onthe said part to move therewith, means for adjusting the last-mentionedbearings, bearing blocks, means for adjusting the bearing blocks, ashaft rotatably mounted in the said blocks, and curving devices mountedon the said shaft.

2. In a machine of the class described, the combination of a framehaving spaced supporting members, means for hingedly mounting one of themembers, a cross-bar eXtending from one member to the other and holdingthe latter in normal position, relativelyadjustable roll-carrying shaftsmounted on the members, a plurality of disks removably mounted on theshafts for forming the rolls, and means for driving the shafts.

3. In a machine of the class described, the combination of a pair ofuprights, one of which is composed of hingedly connected sections,members extending from one upright to the other for holding the movablesection in fixed relation With respect to the other upright,roll-carrying shafts, bearings for the shafts arranged in the movablesection of the one upright and also in the other upright, means foradjusting the bearings of one of the shafts, and rolls on the shaftscomprising disks of Various diameters and contours, the disks of eachroll bearing directly on each other.

In testimony whereof I alix my signature in presence of tWo Witnesses. Y

EDWARD MGMAHON.

Witnesses:

J. W. COOPER, L. B. NUNns.

